Optimizing weights for least-squares Mössbauer spectra analysis

1981 ◽  
Vol 186 (3) ◽  
pp. 553-559 ◽  
Author(s):  
F. Aramu ◽  
V. Maxia ◽  
S. Serci
Keyword(s):  
Least Squares ◽  
Mössbauer Spectra ◽  
Spectra Analysis ◽  
Mossbauer Spectra

Structural and Magnetic Relaxation of Fe61Co10Y8Mo1B20 Bulk Amorphous Alloy Obtained Using Two Methods

2018 ◽  
Vol 69 (8) ◽  
pp. 2097-2101
Author(s):  
Pawel Pietrusiewicz ◽  
Marcin Nabialek ◽  
Bartlomiej Jez
Keyword(s):  
Mössbauer Spectra ◽  
Amorphous Structure ◽  
Elementary Level ◽  
Bulk Amorphous Alloy ◽  
Casting Method ◽  
Spectra Analysis ◽  
Mossbauer Spectra ◽  
Injection Casting ◽  
Hyperfine Field Distributions ◽  
Material Volume

Bulk amorphous Fe61Co10Y8Mo1B20 alloys in the form of plates have been prepared using two methods: suction casting and injection casting. The structure of the as cast samples have been studied using Mossbauer spectroscopy. The obtained Mossbauer spectra are typical for materials of amorphous structure. In the hyperfine field distributions obtained from the Mossbauer spectra analysis, there are variations between the probability of occurrence of magnetic atoms around central atom. Then, magnetic susceptibility disaccommodation has been measured for the tested samples. These measurements indicate that the structural relaxation in the studied samples occur at the elementary level. Injection casting method for the tested alloy determines, in the material volume, the formation of more point relaxators in the form of free volume.

Deconvolution of Mossbauer Spectra by the Finite Impulse Response Operator (FIRO) Method

1985 ◽  
Vol 39 (6) ◽  
pp. 1014-1017 ◽  
Author(s):  
K. Shimokoshi ◽  
T. Kanzaki ◽  
R. Norman Jones
Keyword(s):  
Least Squares ◽  
Iron Oxides ◽  
Impulse Response ◽  
Mössbauer Spectra ◽  
Finite Impulse Response ◽  
Aqueous Suspension ◽  
Air Oxidation ◽  
Good Reliability ◽  
Response Operator ◽  
Mossbauer Spectra

The finite impulse response operator (FIRO) method, developed recently by Jones and Shimokoshi [Applied Spectroscopy 37, 59 (1983)] has been applied to the deconvolution of Mossbauer spectra. The overlapped bands of the Mossbauer spectra of iron oxides, formed in the air oxidation of an aqueous suspension of Fe(OH)2, have been deconvolved by the FIRO method in order that the correct positions and intensities of the lines might be defined. The peak positions so determined can be used with good reliability as initial estimates for the customary method of profile determination by a least-squares fitting routine.

New possibilities for least-squares fitting of mössbauer spectra

1980 ◽  
Vol 122 (4) ◽  
pp. 357-361 ◽  
Author(s):  
H. Nullens ◽  
G. De Roy ◽  
P. Van Espen ◽  
F. Adams ◽  
E.F. Vansant
Keyword(s):  
Least Squares ◽  
Mössbauer Spectra ◽  
Least Squares Fitting ◽  
Mossbauer Spectra

Mossbauer spectra analysis in amorphous system studies

1976 ◽  
Vol 9 (12) ◽  
pp. 1101-1105 ◽  
Author(s):  
P Mangin ◽  
G Marchal ◽  
M Piecuch ◽  
C Janot
Keyword(s):  
Mössbauer Spectra ◽  
Spectra Analysis ◽  
Mossbauer Spectra ◽  
Amorphous System
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